ALTERNATOR FITS 07 08 09 GMC YUKON XL 4.8 5.3 6.0 6.2 V8 15200268 15263858 8400078 22020 100% NEW and Made with the Highest Quality Components Available Full One Year Warranty Computer tested for consistent Quality and unsurpassed reliability Alternator - Voltage: 12V Amperage: 160 Amps Fan: Internal Regulator: Internal Pulley: Serpentine Grooves: 6 Source: Aftermarket